First blush, though, is that this is a much sharper version than any that I saw with MT3, so I'm looking forward to messing about with it. That may change once I dip into the style sheets, but we'll see. I can already see, though, how some of the workarounds we developed for CCC Online are going to be supported as features in MT4, so I'm pretty happy about that.
Oh, and commenting. I've enabled anonymous comments, along with a default captcha, so commenting will require clicking on the "comment anonymously" link, and puzzling out a handful of letters. It's a little extra burden, but the tradeoff it represents (no more greenlists, no more junk drawer purges, no more picking through 100s of pending comments to find the few that are legit) should be substantial.
And the auto tag cloud, I'm hoping, will inspire me to be better about tagging my entries as I write them, and to slowly work back through the opening 1000 entries, tagging on the way...
That is all.